Pr135 proto

[vecipher]

Summary

Briefly explain what this PR changes and why. Include user impact (if any).

Changes

• Bullet the notable changes (configs, CI, docs, code). Keep it terse.

Testing / Verification

Explain how you verified the change locally. Paste key logs or attach screenshots if helpful.

Risk & Rollback

• Risk level: low / medium / high
• Rollback plan: how to revert safely if needed

Related

Link issues/PRs: e.g. Fixes #, Ref #.

---

Pre‑flight Checklist

Run locally before opening the PR. Check only the items that apply.

Hygiene

• pre-commit run -a is clean

Formatting

• ruff format --check . is clean
  (CI may check a subset; keep the repo formatted to avoid drift.)

Lint

• Repo safety set: ruff check --force-exclude --select E9,F63,F7,F82 . is clean
• CLI strict (if touching CLI): ruff check --force-exclude clematis/cli is clean

Types

• CLI only (if touching CLI): mypy --config-file pyproject.toml is clean

Build & Smoke (as relevant)

• Wheel builds: python -m build
• Examples smoke: python scripts/examples_smoke.py --all --no-check-traces

Docs & Changelog (as relevant)

• Updated docs/dev notes (e.g. docs/m8/packaging_cli.md, CONTRIBUTING.md)
• Updated CHANGELOG.MD

Runtime behavior

• No runtime behavior change (or explicitly documented above)